body,h1,h2,h3,h4,h5,h6,ul{
  margin: 0;
  padding: 0;
}
ul{
    list-style: none;
}
ul li{
    float: left;
}
a{
    text-decoration: none;
    color: #e0e6e8;
}
/* 设置body字体大小及边框 */
body{
  font-size: 16px;
  font-family: 'Lato', sans-serif;
  border-top:4px solid #34495e;  /*给body添加上边框，就不会出先短线框的问题*/
}
header{
  width: 960px;
  margin: 0 auto; /*左右两端对齐是这样写的*/
  /* 设置logobox上外边距 */
}
header .logo-box{
    position: relative;
    /*还有css里面只能包含一个选择器，可包含多个派生选择器，也就是header你定义一边就行，不要定义好多header*/
      height: 50px; /*增加一个高度就行*/
      margin-top: 20px;
      margin-bottom: 30px;
  }
  /*设置logo居左浮动*/
header .logo{
      float: left;
      width: 55%;
  }
  /*设置b标签颜色*/
header .logo b{
      color: #1abc9c;
  }
  /*设置logo下的h1和span左浮动*/
header .logo h1,span{
      float: left;
  }
  /*设置logo span文字颜色,行高及居左外边距*/
header .logo span{
      color: #cfd3d6;
      line-height: 48px;
      margin-left: 20px;
  }
  /*设置导航大小及居右浮动*/
header nav{
      float: right;;
      width: 45%;
  }
header nav ul li{
      width: 20%;
      text-align: center;
      line-height: 35px;
      font-weight: 500;
      color: #bdc3c7;
  }
.nav-active{
      background-color: #1abc9c;
      border-radius: 3px;
      color: #fff;
  }
.title-box{
      position: relative;
      height: 105px;
      color: #cfd3d6;
  }
.box-left{
      float: left;
  }
.box-right{
      float: right;
  }
.title-box .box-right{
      width: 25%;
  }
.title-box .box-left span{
      margin-top: 25px;
  }
.contact{
      margin-top: 10px;
  }
.contact li{
      width: 15%;
      height: 20px;
      padding: 10px;
      margin-right: 10px;
      text-align: center;
      border-radius: 3px;
  }
.contact li a{
      color: #fff;
  }
.qq{
      background: #00acee;
  }
.wechat{
      background: #598728;
  }
.weibo{
      background: #db4a39;
  }

.content{
      background-color: #34495e;
      padding: 10px 0;
  }
.img-box{
      width: 960px;
      height: 800px;
      margin: 0 auto;
  }
.img-box img{
      width: 100%;
      border-radius: 3px;
  }
.img-list{
      width: 960px;
      margin: 0 auto;
  }
.img-list ul li{
      width: 23%;
      margin-right: 19.2px;
      margin-bottom: 19.2px;
      text-align: center;
  }
.img-list ul li span{
      line-height: 1.5;
      float: none;
  }
.text-list{
      width: 600px;
      margin: 0 auto;
      height: 70px;
      line-height: 70px;
  }
.text-list ul li::after{
      content: '/';
      color: #fff;
      margin: 0 5px;
  }
.text-one{
      font-size: 18px;
      font-weight: 600;
  }
.text-two{
      font-size: 14px;
  }
.new-box{
      width: 960px;
      height: 180px;
      margin: 0 auto;
  }
.new-list{
      float: left;
      width: 25%;
  }
footer{
  width: 960px;
  height: 450px;
  border: 1px solid #fff;
  text-align: center;;
  padding-top: 20px;
  margin: 0px auto;
  line-height: 450px;
}
